MARINE REPORT / 72 HOURS

Ishigaki Snorkel Report Today

Japan · Updated Tue 15:14 (JST) · Source: Snapshot

The skinny

Marginal Data updated Tue 15:14 (JST)

Ishigaki looks marginal today. The least-bad daylight window is around Tue 17:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 2.9/10

Tue 16:00 (JST)

Later today

Poor · 3.5/10

Tue 17:00 (JST)

Next three days

Fair · 4.5/10

Fri 09:00 (JST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 3.5/10

Best time: Tue 17:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Tue 17:00 (Poor). Peak afternoon wind is about 7.8 m/s.

Email me when it is good

Sunrise

06:46

Sunset

18:07

Water

27.4°C

Max air

24.8°C

Sky

Clear

9% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Tuesday

❌ Poor conditions

Main blocker: Waves

Wednesday

⚠️ Fair conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Fri 09:00: Fair (0.45) · still limited by waves, tide/current
  • Thu 10:00: Fair (0.45) · still limited by waves, tide/current
  • Fri 14:00: Fair (0.44) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (67 hours)
  • Darkness (42 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low drift risk now.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Wed 08:00

Tue 19:00, Wed 08:00, Wed 19:00, Thu 09:00, Thu 20:00, Fri 10:00

Nearby alternatives in Japan

Miyako

127 km away

❌ Poor

Kerama Islands

381 km away

❌ Poor

Okinawa - Blue Cave

438 km away

❌ Poor

Advanced forecast data

Viewing historical data

Wed 16:00 – Sat 16:00 (JST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.18 around Wed 16:00; 0 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 2.58m to 4.44m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 10.39 to 15.26m/s).

Tides range from 0.74m to 1.66m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Wed 16:00 2.58 · high 10.39 · high 28.70 · good Poor
Wed 17:00 2.70 · high 11.13 · high 28.70 · good Poor
Wed 18:00 2.82 · high 11.15 · high 28.60 · good Poor
Wed 19:00 2.94 · high 11.41 · high 28.60 · good Poor
Wed 20:00 3.12 · high 12.50 · high 28.60 · good Poor
Wed 21:00 3.22 · high 12.45 · high 28.60 · good Poor
Wed 22:00 3.32 · high 13.33 · high 28.50 · good Poor
Wed 23:00 3.44 · high 13.62 · high 28.50 · good Poor
Thu 00:00 3.54 · high 13.84 · high 28.40 · good Poor
Thu 01:00 3.66 · high 12.86 · high 28.40 · good Poor
Thu 02:00 3.76 · high 13.06 · high 28.40 · good Poor
Thu 03:00 3.88 · high 12.58 · high 28.30 · good Poor
Thu 04:00 3.96 · high 13.38 · high 28.30 · good Poor
Thu 05:00 4.02 · high 13.75 · high 28.30 · good Poor
Thu 06:00 4.16 · high 12.10 · high 28.20 · good Poor
Thu 07:00 4.22 · high 13.25 · high 28.20 · good Poor
Thu 08:00 4.30 · high 14.56 · high 28.20 · good Poor
Thu 09:00 4.36 · high 14.88 · high 28.20 · good Poor
Thu 10:00 4.36 · high 14.56 · high 28.20 · good Poor
Thu 11:00 4.38 · high 13.79 · high 28.20 · good Poor
Thu 12:00 4.38 · high 15.21 · high 28.20 · good Poor
Thu 13:00 4.40 · high 14.91 · high 28.20 · good Poor
Thu 14:00 4.42 · high 14.91 · high 28.30 · good Poor
Thu 15:00 4.44 · high 15.26 · high 28.30 · good Poor
Thu 16:00 4.48 · high 15.38 · high 28.30 · good Poor
Thu 17:00 4.52 · high 15.80 · high 28.30 · good Poor
Thu 18:00 4.48 · high 15.78 · high 28.30 · good Poor
Thu 19:00 4.48 · high 15.48 · high 28.20 · good Poor
Thu 20:00 4.46 · high 15.83 · high 28.20 · good Poor
Thu 21:00 4.46 · high 16.86 · high 28.20 · good Poor
Thu 22:00 4.50 · high 16.97 · high 28.20 · good Poor
Thu 23:00 4.54 · high 17.35 · high 28.20 · good Poor
Fri 00:00 4.58 · high 15.53 · high 28.20 · good Poor
Fri 01:00 4.64 · high 15.63 · high 28.20 · good Poor
Fri 02:00 4.72 · high 16.79 · high 28.10 · good Poor
Fri 03:00 4.78 · high 17.44 · high 28.10 · good Poor
Fri 04:00 4.82 · high 17.13 · high 28.10 · good Poor
Fri 05:00 4.86 · high 17.51 · high 28.10 · good Poor
Fri 06:00 4.90 · high 18.45 · high 28.10 · good Poor
Fri 07:00 4.86 · high 20.02 · high 28.10 · good Poor
Fri 08:00 4.94 · high 20.18 · high 28.10 · good Poor
Fri 09:00 5.04 · high 20.44 · high 28.10 · good Poor
Fri 10:00 5.14 · high 21.38 · high 28.10 · good Poor
Fri 11:00 5.24 · high 20.25 · high 28.10 · good Poor
Fri 12:00 5.34 · high 23.00 · high 28.10 · good Poor
Fri 13:00 5.38 · high 21.05 · high 28.10 · good Poor
Fri 14:00 5.42 · high 20.67 · high 28.10 · good Poor
Fri 15:00 5.46 · high 20.78 · high 28.10 · good Poor
Fri 16:00 5.42 · high 20.94 · high 28.10 · good Poor
Fri 17:00 5.36 · high 19.00 · high 28.10 · good Poor
Fri 18:00 5.32 · high 19.04 · high 28.10 · good Poor
Fri 19:00 5.24 · high 23.94 · high 28.10 · good Poor
Fri 20:00 5.08 · high 21.89 · high 28.10 · good Poor
Fri 21:00 4.92 · high 21.22 · high 28.10 · good Poor
Fri 22:00 4.76 · high 21.16 · high 28.10 · good Poor
Fri 23:00 4.58 · high 20.65 · high 28.10 · good Poor
Sat 00:00 4.42 · high 21.39 · high 28.00 · good Poor
Sat 01:00 4.30 · high 21.43 · high 28.00 · good Poor
Sat 02:00 4.18 · high 20.29 · high 28.00 · good Poor
Sat 03:00 4.06 · high 20.30 · high 28.00 · good Poor
Sat 04:00 3.98 · high 21.38 · high 28.00 · good Poor
Sat 05:00 3.92 · high 21.01 · high 28.00 · good Poor
Sat 06:00 3.84 · high 19.92 · high 28.00 · good Poor
Sat 07:00 3.78 · high 18.64 · high 28.00 · good Poor
Sat 08:00 4.58 · high 20.07 · high 28.00 · good Poor
Sat 09:00 4.50 · high 18.61 · high 28.00 · good Poor
Sat 10:00 4.32 · high 18.02 · high 28.00 · good Poor
Sat 11:00 4.12 · high 16.72 · high 28.00 · good Poor
Sat 12:00 3.94 · high 15.58 · high 28.00 · good Poor
Sat 13:00 3.80 · high 15.33 · high 28.00 · good Poor
Sat 14:00 3.68 · high 14.91 · high 28.00 · good Poor
Sat 15:00 3.54 · high 14.83 · high 28.00 · good Poor